JP4305134B2 - Inside / outside air switching device - Google Patents

Inside / outside air switching device Download PDF

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JP4305134B2
JP4305134B2 JP2003374688A JP2003374688A JP4305134B2 JP 4305134 B2 JP4305134 B2 JP 4305134B2 JP 2003374688 A JP2003374688 A JP 2003374688A JP 2003374688 A JP2003374688 A JP 2003374688A JP 4305134 B2 JP4305134 B2 JP 4305134B2
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air introduction
outside air
door
introduction port
casing
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JP2005138636A (en
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清隆 新田
昭夫 平野
尚久 西村
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Denso Corp
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Denso Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664—Construction or arrangement of damper doors
    • B60H1/00671—Damper doors moved by rotation; Grilles
    • B60H1/00678—Damper doors moved by rotation; Grilles the axis of rotation being in the door plane, e.g. butterfly doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00835—Damper doors, e.g. position control
    • B60H1/00849—Damper doors, e.g. position control for selectively commanding the induction of outside or inside air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664—Construction or arrangement of damper doors
    • B60H2001/007—Manufacturing or assembling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664—Construction or arrangement of damper doors
    • B60H2001/00707—Details of pivots of damper doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664—Construction or arrangement of damper doors
    • B60H2001/00714—Details of seals of damper doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered
    • F25D2323/023—Door in door constructions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/7036—Jacketed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20207—Multiple controlling elements for single controlled element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20207—Multiple controlling elements for single controlled element
    • Y10T74/20372—Manual controlling elements
    • Y10T74/20384—Levers
    • Y10T74/2039—Pair of levers

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

本発明は、車室内への外気導入時において内気を一部取り入れる補助内気導入口が備えられた内外気切替装置に関する。   The present invention relates to an inside / outside air switching device provided with an auxiliary inside air introduction port for partially taking in inside air when introducing outside air into a vehicle interior.

従来から、車室内に導入する空気を内気もしくは外気に切り替える内外気切替装置が知られている。このような内外気切替装置では、一般的に車室内を暖房するときには、フロントガラス等に曇りが生じないように外気導入する。ところが、この暖房を極寒のときに行なうと、冷たい外気のみ車室内に取り込むことになるので暖房性能が向上しない。   2. Description of the Related Art Conventionally, an inside / outside air switching device that switches air introduced into a vehicle interior to inside air or outside air is known. In such an inside / outside air switching device, outside air is generally introduced when the vehicle interior is heated so that the windshield or the like is not fogged. However, if this heating is performed in extreme cold, only cold outside air is taken into the passenger compartment, so that the heating performance is not improved.

そこで、比較的温かい車室内の空気を利用して暖房効果を高めるために、冷たい外気に車室内空気をミックスするように、ケーシングや内外気切替ドアに開口した補助内気導入口と、これを開閉する補助内気導入ドアとを備える内外気切替装置がある（例えば、下記特許文献１参照。）。   Therefore, in order to enhance the heating effect by using the relatively warm air in the passenger compartment, the auxiliary interior air inlet opening in the casing and the inside / outside air switching door is opened and closed to mix the interior air with the cold outside air. There is an inside / outside air switching device including an auxiliary inside air introduction door (see, for example, Patent Document 1 below).

下記特許文献１に開示された内外気切替装置では、補助内気導入口は内外気切替ドアに設けられており、補助内気導入口を開閉する補助内気導入ドアは、回動中心となる回転軸が支持部材であるブラケットにより内外気切替ドアに取り付けられている。   In the inside / outside air switching device disclosed in the following Patent Document 1, the inside / outside air switching door is provided in the inside / outside air switching door, and the auxiliary inside air introduction door that opens and closes the auxiliary inside air introduction port has a rotation shaft serving as a rotation center. The bracket is a support member and is attached to the inside / outside air switching door.

また、ケーシングに補助内気導入口を設けた内外気切替装置の一例の要部断面図を図８に示す。図８に示す内外気切替装置では、ケーシング５１１に設けられた補助内気導入口５１９を、回転軸５２１を中心に回動する補助内気導入ドア５２０により開閉するようになっている。   Further, FIG. 8 shows a cross-sectional view of a main part of an example of the inside / outside air switching device in which an auxiliary inside air introduction port is provided in the casing. In the inside / outside air switching device shown in FIG. 8, an auxiliary inside air introduction port 519 provided in the casing 511 is opened and closed by an auxiliary inside air introduction door 520 that rotates about a rotation shaft 521.

この補助内気導入ドア５２０は、回転軸５２１がケーシング５１１の支持部５１１ａと支持部材であるカバープレート５３０の支持突起５３４とにより挟み込まれて支持されることにより、ケーシング５１１に取り付けられている。
実公平２−３０３２３号公報 The auxiliary inside air introduction door 520 is attached to the casing 511 by the rotation shaft 521 being sandwiched and supported by the support portion 511a of the casing 511 and the support protrusion 534 of the cover plate 530 which is a support member.
No. 2-30323

しかしながら、上記従来の技術では、支持部材の組付け状態によっては、補助内気導入ドアが固着したり、がたつき音を発生したりするという問題がある。   However, in the above-described conventional technology, there is a problem that the auxiliary inside air introduction door is fixed or a rattling sound is generated depending on the assembled state of the support member.

例えば、図８に示す内外気切替装置においては、ケーシング５１１の支持部５１１ａとカバープレート５３０の支持突起５３４との間隔が狭くなると補助内気導入ドア５２０が固着し易く（回動不良を発生し易く）、支持部５１１ａと支持突起５３４との間隔が広くなると補助内気導入ドア５２０ががたつき音を発生し易くなるという問題がある。   For example, in the inside / outside air switching device shown in FIG. 8, the auxiliary inside air introduction door 520 is easily fixed (prone to rotation failure) when the distance between the support portion 511a of the casing 511 and the support protrusion 534 of the cover plate 530 becomes narrow. ) If the distance between the support portion 511a and the support protrusion 534 is increased, the auxiliary inside air introduction door 520 is liable to generate rattling noise.

本発明は、上記点に鑑みてなされたものであり、支持部材の組付け状態がばらついたとしても、補助内気導入ドアの固着やがたつき音発生を防止することが内外気切替装置を提供することを目的とする。   The present invention has been made in view of the above points, and provides an inside / outside air switching device that prevents the auxiliary inside air introduction door from sticking or rattling even if the mounting state of the support member varies. The purpose is to do.

上記目的を達成するため、請求項１に記載の発明では、
車室内気を導入するための内気導入口（１２）および車室外気を導入するための外気導入口（１３）を有するケーシング（１１）と、
内気導入口（１２）および外気導入口（１３）を切替開閉する内外気切替手段（１４）と、
ケーシング（１１）に設けられ、内外気切替手段（１４）が外気導入口（１３）を開く外気導入モード時に、内気を導入するための補助内気導入口（１９）と、
回転軸（２１）を中心に回動し、補助内気導入口（１９）を開閉する補助内気導入ドア（２０）と、
ケーシング（１１）に対し別部材として設けられ、補助内気導入ドア（２０）を支持するための支持部材（３０）とを備える内外気切替装置であって、
回転軸（２１）は、軸方向における中央部（２１１）に対し両側の端延部（２１２、２１３）が小径に形成されており、一方の端延部（２１２）に対し他方の端延部（２１３）が、軸方向長さが長く形成されており、
支持部材（３０）は、回転軸（２１）の端延部（２１２、２１３）をそれぞれ回動可能に挿設する孔部（３４１、３５１）を一対有し、一対の孔部（３４１、３５１）の周囲には、それぞれ回転軸（２１）の中央部（２１１）の端面（２１１ａ、２１１ｂ）を受ける座部（３４２、３５２）が形成され、支持部材（３０）の一対の座部（３４２、３５２）のうち、一方の端延部（２１２）に対応する側の座部（３４２）にのみ、一方の端延部（２１２）を孔部（３４１）に軸直交方向から受け入れるための切欠部（３４３）が形成し、
補助内気導入ドア（２０）は、回転軸（２１）を孔部（３４１、３５１）に挿設した状態で、支持部材（３０）を介してケーシング（１１）に組み付けられていることを特徴としている。 In order to achieve the above object, in the invention described in claim 1,
A casing (11) having an inside air introduction port (12) for introducing vehicle interior air and an outside air introduction port (13) for introducing vehicle compartment outside air;
Inside / outside air switching means (14) for switching between opening and closing the inside air introduction port (12) and the outside air introduction port (13);
An auxiliary inside air introduction port (19) for introducing inside air in an outside air introduction mode provided in the casing (11) and in which the inside / outside air switching means (14) opens the outside air introduction port (13);
An auxiliary internal air introduction door (20) that rotates about the rotation shaft (21) and opens and closes the auxiliary internal air introduction port (19);
An inside / outside air switching device provided as a separate member with respect to the casing (11) and provided with a support member (30) for supporting the auxiliary inside air introduction door (20),
The rotating shaft (21) has end portions (212, 213) on both sides with a small diameter with respect to the central portion (211) in the axial direction, and the other end extending portion with respect to one end extending portion (212). (213) has a long axial length,
The support member (30) is Tan'nobe portion (212, 213) each pivotally inserted to hole portions (341 and 351) to a pair, a pair of holes of the rotating shaft (21) (341, 351 ) Are formed with seat portions (342, 352) for receiving end surfaces (211a, 211b) of the central portion (211) of the rotation shaft (21), and a pair of seat portions (342) of the support member (30). 352), only the seat portion (342) on the side corresponding to the one end extension portion (212) is provided with a notch for receiving the one end extension portion (212) in the hole portion (341) from the direction perpendicular to the axis. Part (343) formed,
The auxiliary inside air introduction door (20) is assembled to the casing (11) via the support member (30) in a state where the rotation shaft (21) is inserted into the holes (341, 351). Yes.

これによると、補助内気導入ドア（２０）は回転軸（２１）が支持部材（３０）の孔部（３４１、３５１）により支持されている。したがって、支持部材（３０）のケーシング（１１）への組付け状態がばらついたとしても、補助内気導入ドア（２０）の回転軸（２１）の支持状態は変化しない。このようにして、補助内気導入ドア（２０）の固着やがたつき音発生を防止することができる。加えて、回転軸（２１）中央部（２１１）の端延部（２１２、２１３）側の両端面（２１１ａ、２１１ｂ）は一対の座部（３４２、３５２）により受けられる。したがって、補助内気導入ドア（２０）の回転軸（２１）軸線方向の位置決めが容易である。また、切欠部（３４３）を利用して、軸方向長さが短い方の端延部（２１２）を切欠部（３４３）を形成した方の座部（３４２）内側にある孔部（３４１）に挿設することができる。すなわち、切欠部（３４３）を利用しなければ軸方向長さが短い方の端延部（２１２）を孔部（３４１）に挿設できないように回転軸（２１）の中央部（２１１）や端延部（２１２、２１３）の寸法および一対の座部（３４２、３５２）の間隔を設定すれば、回転軸（２１）を有する補助内気導入ドア（２０）を支持部材（３０）に逆向きに組み付けることを防止することができる。 According to this, the rotating shaft (21) of the auxiliary inside air introduction door (20) is supported by the holes (341, 351) of the support member (30). Therefore, even if the assembly state of the support member (30) to the casing (11) varies, the support state of the rotating shaft (21) of the auxiliary inside air introduction door (20) does not change. In this way, it is possible to prevent the auxiliary inside air introduction door (20) from being stuck and rattling. In addition, both end surfaces (211a, 211b) on the side of the extended portion (212, 213) of the central portion (211) of the rotating shaft (21) are received by the pair of seat portions (342, 352). Therefore, positioning of the auxiliary inside air introduction door (20) in the direction of the axis of rotation (21) is easy. Further, using the notch portion (343), the end portion (212) having a shorter axial length is formed in the hole portion (341) inside the seat portion (342) in which the notch portion (343) is formed. Can be installed. That is, if the notched portion (343) is not used, the end portion (212) having the shorter axial length cannot be inserted into the hole (341) so that the central portion (211) of the rotating shaft (21) If the dimensions of the extended end portions (212, 213) and the distance between the pair of seat portions (342, 352) are set, the auxiliary inside air introduction door (20) having the rotation shaft (21) is directed backward to the support member (30). Can be prevented from being assembled.

また、請求項２に記載の発明では、補助内気導入ドア（２０）は、補助内気導入口（１９）を閉塞するためのドア部（２２）を有し、回転軸（２１）とドア部（２２）とは、一体成形されていることを特徴としている。 In the invention according to claim 2 , the auxiliary inside air introduction door (20) has a door portion (22) for closing the auxiliary inside air introduction port (19), and the rotating shaft (21) and the door portion ( 22) is characterized by being integrally formed.

これによると、補助内気導入ドア（２０）を製造するときに回転軸（２１）とドア部（２２）とを接合する必要がない。   According to this, it is not necessary to join a rotating shaft (21) and a door part (22) when manufacturing an auxiliary inside air introduction door (20).

なお、上記各手段に付した括弧内の符号は、後述する実施形態記載の具体的手段との対応関係を示す一例である。   In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

以下、本発明の実施の形態を図に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明を適用した内外気切替装置を備える車両用空調装置の送風ユニット部１を示す概略斜視図である。   FIG. 1 is a schematic perspective view showing a blower unit 1 of a vehicle air conditioner including an inside / outside air switching device to which the present invention is applied.

図１に示すように、送風ユニット部１の下部側に配置されたスクロールケーシング２内には、図示しない送風ファンが配設されており、上方側から吸い込んだ空気を吐出口３から吹き出し、下流側に配置された図示しない空調ユニット内で空調して車室内に送風するようになっている。   As shown in FIG. 1, a blower fan (not shown) is disposed in a scroll casing 2 disposed on the lower side of the blower unit 1, and blows air sucked from the upper side from the discharge port 3, downstream Air conditioning is performed in an air conditioning unit (not shown) arranged on the side, and the air is blown into the passenger compartment.

スクロールケーシング２の上方側には樹脂製（本例ではポリプロピレン製）のケーシング（内外気切替箱）１１が接続されている。ケーシング１１には、車室内空気（内気）を導入する内気導入口１２、および車室外空気（外気）を導入する外気導入口１３（紙面裏面側）が形成されており、ケーシング１１内には、両導入口１２、１３を切替開閉する内外気切替手段としての内外気切替ドア１４が回動可能に配設されている。この内外気切替ドア１４は、複数本のリンクからなるリンク機構（図示せず）を介してサーボモータ等の駆動手段（図示せず）又は乗員の手動操作により回転駆動される。   A casing (internal / external air switching box) 11 made of resin (in this example, made of polypropylene) is connected to the upper side of the scroll casing 2. In the casing 11, an inside air introduction port 12 for introducing vehicle interior air (inside air) and an outside air introduction port 13 (back side of the paper surface) for introducing vehicle compartment outside air (outside air) are formed. An inside / outside air switching door 14 serving as an inside / outside air switching means for switching between the two inlets 12 and 13 is rotatably disposed. The inside / outside air switching door 14 is rotationally driven by a driving means (not shown) such as a servo motor or a manual operation of an occupant through a link mechanism (not shown) composed of a plurality of links.

ケーシング１１の内気導入口１２形成部位の下方側側面部には、内外気切替ドア１４が外気導入口１３を開口している外気導入モード時に一部内気を導入する矩形状の補助内気導入口１９が形成されている。そして、ケーシング１１内には、補助内気導入口１９を開閉するサブドア（補助内気導入ドア）２０が配設され、後述するように、ケーシング１１に装着されたカバープレート３０により回動自在に支持されている。   A rectangular auxiliary inside air introduction port 19 for introducing a part of the inside air in the outside air introduction mode in which the inside / outside air switching door 14 opens the outside air introduction port 13 is provided on the lower side surface portion of the inside air introduction port 12 formation portion of the casing 11. Is formed. A sub door (auxiliary air introduction door) 20 that opens and closes the auxiliary air introduction port 19 is disposed in the casing 11 and is rotatably supported by a cover plate 30 attached to the casing 11 as will be described later. ing.

図２は、補助内気導入口１９形成部位の縦断面図であり、図３（ａ）は、サブドア２０の平面図、図３（ｂ）は、サブドア２０を支持する支持部材であるカバープレート３０の平面図である。   2 is a longitudinal cross-sectional view of a portion where the auxiliary inside air introduction port 19 is formed. FIG. 3A is a plan view of the sub door 20, and FIG. 3B is a cover plate 30 that is a support member that supports the sub door 20. FIG.

図３（ａ）に示すように、サブドア２０は、回動中心となる略円柱状の回転軸２１と補助内気導入口１９を開閉するためのドア部である矩形状のドア板２２とを一体成形して形成した樹脂（本例ではポリプロプレン樹脂）成形品と、ドア板２２の紙面裏面側に貼着された樹脂（本例ではポリウレタン樹脂）発泡体からなるパッキン２３（図２参照）とから構成されている。   As shown in FIG. 3A, the sub door 20 integrally includes a substantially cylindrical rotary shaft 21 serving as a rotation center and a rectangular door plate 22 that is a door portion for opening and closing the auxiliary inside air introduction port 19. Molded resin (polypropylene resin in this example) molded product, and packing 23 (see FIG. 2) made of a resin (polyurethane resin in this example) foam adhered to the back side of the paper surface of the door plate 22; It is composed of

回転軸２１は、両端がテーパ状に形成された比較的大径（本例ではφ５ｍｍ）の円柱状の中央部２１１がドア板２２と連結しており、中央部２１１の両端面２１１ａ、２１１ｂからは円柱状の端延部２１２、２１３が延設されている。端延部２１２、２１３は中央部２１１より小径（本例ではφ３ｍｍ）に形成されており、端延部２１２の軸方向長さ（本例では４．５ｍｍ）より端延部２１３の軸方向長さ（本例では７ｍｍ）の方が長くなっている。   The rotating shaft 21 is connected to a door plate 22 with a cylindrical central portion 211 having both ends tapered and having a relatively large diameter (φ5 mm in this example), and from both end surfaces 211 a and 211 b of the central portion 211. The column-shaped end extending portions 212 and 213 are extended. The end extending portions 212 and 213 are formed to have a smaller diameter (φ3 mm in this example) than the central portion 211, and the axial length of the end extending portion 213 from the axial length of the end extending portion 212 (4.5 mm in this example). The length (7 mm in this example) is longer.

一方、図３（ｂ）に示すように、カバープレート３０は、図中左右方向に延びる平板部３１と、平板部３１の図中上方側面に立設した一対の支持突起３４、３５とにより構成されている。   On the other hand, as shown in FIG. 3B, the cover plate 30 includes a flat plate portion 31 extending in the left-right direction in the drawing, and a pair of support protrusions 34 and 35 erected on the upper side surface of the flat plate portion 31 in the drawing. Has been.

平板部３１の図中右方縁部は、カバープレート３０をケーシング１１に螺着するための螺着部３２となっており、螺着部３２にはねじ穴３２ａが形成されている。これに対し、平板部３１の図中左方側辺には、図中上方向に延び爪係止穴３３ａが形成された係止部３３が設けられている。爪係止穴３３ａは、ケーシング１１の外面に形成された図示しない爪部に係止するための穴である。   A right edge portion of the flat plate portion 31 in the drawing is a screwed portion 32 for screwing the cover plate 30 to the casing 11, and a screw hole 32 a is formed in the screwed portion 32. On the other hand, on the left side in the drawing of the flat plate portion 31, there is provided a locking portion 33 extending in the upward direction in the drawing and having a claw locking hole 33a. The claw locking hole 33 a is a hole for locking to a claw portion (not shown) formed on the outer surface of the casing 11.

平板部３１に立設された支持突起３４、３５には、サブドア２０の回転軸２１の端延部２１２、２１３を挿設するための孔部３４１、３５１が設けられている。孔部３４１、３５１は端延部２１２、２１３を確実に支持するために、本例ではともに軸方向長さ３．５ｍｍの貫通孔として形成され、孔部３４１、３５１の周囲は、孔部３４１、３５１に端延部２１２、２１３が挿設されたときに、中央部２１１の端面２１１ａ、２１１ｂを受ける座部３４２、３５２となっている。   Holes 341 and 351 for inserting end extending portions 212 and 213 of the rotary shaft 21 of the sub door 20 are provided in the support protrusions 34 and 35 erected on the flat plate portion 31. The holes 341 and 351 are both formed as through-holes having an axial length of 3.5 mm in order to reliably support the extended portions 212 and 213, and the periphery of the holes 341 and 351 is the hole 341. , 351 are seat portions 342 and 352 that receive the end surfaces 211a and 211b of the central portion 211 when the end extending portions 212 and 213 are inserted.

ただし、回転軸２１の一方の端延部２１２が挿設される孔部３４１の周囲の座部３４２には、端延部２１２を孔部３４１に挿設するときに、端延部２１２の先端を径外側から径内方向に孔部３４１まで受け入れるための切欠部３４３が形成されている。   However, when the end extension 212 is inserted into the hole 341, the tip of the end extension 212 is inserted into the seat 342 around the hole 341 into which the one end extension 212 of the rotating shaft 21 is inserted. A notch 343 is formed to receive the hole from the outer diameter side to the hole 341 in the inner diameter direction.

図４は、支持突起３４の先端部の拡大斜視図である。図４に示すように、座部３４２の切欠部３４３は、孔部３４１を中心に、本例では１４０度の角度範囲に深さ（軸方向長さ）１．５ｍｍの切欠きとして形成されている。   FIG. 4 is an enlarged perspective view of the distal end portion of the support protrusion 34. As shown in FIG. 4, the notch 343 of the seat 342 is formed as a notch having a depth (axial length) of 1.5 mm in the angle range of 140 degrees in this example, with the hole 341 as the center. Yes.

ちなみに、本例では、回転軸２１中央部２１１の両端面２１１ａ、２１１ｂ間の間隔は６９ｍｍ、支持突起３４、３５の両座部３４２、３５２間の間隔（両内側座面の間隔）は７０．５ｍｍとしている。   Incidentally, in this example, the distance between both end surfaces 211a and 211b of the central portion 211 of the rotating shaft 21 is 69 mm, and the distance between both seat portions 342 and 352 of the support projections 34 and 35 (the distance between both inner seat surfaces) is 70. 5 mm.

ここで、サブドア２０のケーシング１１への組み付け方法について説明する。   Here, a method of assembling the sub door 20 to the casing 11 will be described.

まず、サブドア２０をカバープレート３０に組み付ける。このときには、まず、サブドア２０の端延部２１３をカバープレート３０の孔部３５１内に挿設し、端部２１１ｂを座部３５２に当接する。次に、端延部２１２を、切欠部３４３内を通過させて孔部３４１内に挿設する。   First, the sub door 20 is assembled to the cover plate 30. At this time, first, the end extension 213 of the sub door 20 is inserted into the hole 351 of the cover plate 30, and the end 211 b is brought into contact with the seat 352. Next, the end extension 212 is inserted into the hole 341 through the notch 343.

このとき、回転軸２１の端面２１１ｂから端延部２１２の先端までの長さは７３．５ｍｍであり、カバープレート３０の座部３５２から切欠部３４３の底面までの距離は７２ｍｍである。したがって、平板部３１を図中上方側に反らせるように撓ませつつ、切欠部３４３内を通過させて端延部２１２を孔部３４１内に挿設する。端延部２１２が孔部３４１内に配置されたら、平板部３１を反らせた外力を除去することにより、平板部３１は弾性力により復元する。これにより、端延部２１２は孔部３４１内に確実に挿設され、図５に示すような状態となる。   At this time, the length from the end surface 211b of the rotating shaft 21 to the tip of the extended portion 212 is 73.5 mm, and the distance from the seat portion 352 of the cover plate 30 to the bottom surface of the notch portion 343 is 72 mm. Therefore, the end extension 212 is inserted into the hole 341 while passing through the notch 343 while bending the flat plate 31 to warp upward in the drawing. When the extended end portion 212 is disposed in the hole portion 341, the flat plate portion 31 is restored by the elastic force by removing the external force that has caused the flat plate portion 31 to warp. Thereby, the end extension part 212 is reliably inserted in the hole part 341, and it will be in a state as shown in FIG.

図５に示す状態では、回転軸２１の中央部２１１両端面２１１ａ、２１１ｂは一対の座部３４２、３５２により受けられる。図５では図示を省略しているが、両端面２１１ａ、２１１ｂと両座部３４２、３５２との間には、若干の軸方向の遊びがある。このように、孔部３４１、３５１内に挿設された端延部２１２、２１３より大径である中央部２１１の両端面２１１ａ、２１１ｂが一対の座部３４２、３５２に受けられることにより、カバープレート３０に対するサブドア２０の回転軸２１軸線方向の位置決めが確実に行なわれる。   In the state shown in FIG. 5, both end surfaces 211 a and 211 b of the central portion 211 of the rotating shaft 21 are received by a pair of seat portions 342 and 352. Although not shown in FIG. 5, there is some axial play between the end faces 211a and 211b and the seats 342 and 352. As described above, the two end surfaces 211a and 211b of the central portion 211 having a larger diameter than the end extending portions 212 and 213 inserted in the hole portions 341 and 351 are received by the pair of seat portions 342 and 352, thereby covering the cover. Positioning of the sub door 20 with respect to the plate 30 in the axial direction of the rotary shaft 21 is reliably performed.

サブドア２０をカバープレート３０に組み付けるときに、万が一、図６に示すように、サブドア２０の端延部２１２をカバープレート３０の孔部３５１内に挿設し、端部２１１ａを座部３５２に当接したとする。すると、次に端延部２１３を孔部３４１内に挿設しようとしても、挿設不可能である。   When the sub door 20 is assembled to the cover plate 30, as shown in FIG. 6, the end extended portion 212 of the sub door 20 is inserted into the hole 351 of the cover plate 30, and the end portion 211 a is brought into contact with the seat portion 352. Suppose you touch. Then, even if it tries to insert end extension part 213 in hole 341 next, insertion is impossible.

ここで、回転軸２１の端面２１１ａから端延部２１３の先端までの長さは７６ｍｍであり、カバープレート３０の座部３５２から切欠部３４３の底面までの距離は７２ｍｍである。したがって、端延部２１３を孔部３４１内に挿設しようとするときには、平板部３１を非常に大きな外力で反らせる必要があり、カバープレート３０に損傷を与えることなく上記寸法差を吸収する量だけ撓ませることは不可能である。   Here, the length from the end surface 211a of the rotating shaft 21 to the tip of the extended end portion 213 is 76 mm, and the distance from the seat portion 352 of the cover plate 30 to the bottom surface of the notch portion 343 is 72 mm. Therefore, when trying to insert the extended end portion 213 into the hole portion 341, it is necessary to warp the flat plate portion 31 with a very large external force, and only an amount that absorbs the above dimensional difference without damaging the cover plate 30. It is impossible to bend.

また、図示はしていないが、サブドア２０をカバープレート３０に組み付けるときに、まず、サブドア２０の端延部２１２をカバープレート３０の孔部３４１内に挿設し、端部２１１ａを座面３４２に当接したとする。すると、次に端延部２１３を孔部３５１内に挿設しようとしても、挿設不可能である。   Although not shown, when the sub door 20 is assembled to the cover plate 30, first, the end extension 212 of the sub door 20 is inserted into the hole 341 of the cover plate 30, and the end 211 a is seated 342. Suppose that it contacts. Then, even if it tries to insert end extension part 213 in hole 351 next, insertion is impossible.

ここでは、回転軸２１の端面２１１ａから端延部２１３の先端までの長さは７６ｍｍであり、カバープレート３０の座部３４２から座部３５２までの距離は７０．５ｍｍである。したがって、この場合も、端延部２１３を孔部３５１内に挿設しようとするときに、平板部３１をカバープレート３０に損傷を与えることなく上記寸法差を吸収する量だけ撓ませることは不可能である。   Here, the length from the end surface 211a of the rotating shaft 21 to the tip of the end extending portion 213 is 76 mm, and the distance from the seat portion 342 to the seat portion 352 of the cover plate 30 is 70.5 mm. Therefore, also in this case, when trying to insert the extended end portion 213 into the hole portion 351, it is not possible to bend the flat plate portion 31 by an amount that absorbs the above dimensional difference without damaging the cover plate 30. Is possible.

また、まず、サブドア２０の端延部２１３をカバープレート３０の孔部３４１内に挿設し、端部２１１ｂを座面３４２に当接したとする。すると、次に端延部２１２を孔部３５１内に挿設しようとしても、挿設不可能である。   First, it is assumed that the end extension 213 of the sub door 20 is inserted into the hole 341 of the cover plate 30 and the end 211 b is in contact with the seating surface 342. Then, even if it tries to insert end extension part 212 in hole 351 next, insertion is impossible.

ここでは、回転軸２１の端面２１１ｂから端延部２１２の先端までの長さは７３．５ｍｍであり、カバープレート３０の座部３４２から座部３５２までの距離は７０．５ｍｍである。したがって、この場合も、端延部２１３を孔部３５１内に挿設しようとするときに、平板部３１をカバープレート３０に損傷を与えることなく上記寸法差を吸収する量だけ撓ませることは難しい。   Here, the length from the end surface 211b of the rotating shaft 21 to the tip of the end extension 212 is 73.5 mm, and the distance from the seat 342 to the seat 352 of the cover plate 30 is 70.5 mm. Therefore, also in this case, it is difficult to bend the flat plate portion 31 by an amount that absorbs the dimensional difference without damaging the cover plate 30 when the end extending portion 213 is to be inserted into the hole portion 351. .

このように、最初に、軸方向長さが長い方の端延部２１３を、切欠部の形成されていない座部３５２側の孔部３５１に挿設したときのみ、１．５ｍｍの寸法差を吸収するように平板部３１を撓ませて、サブドア２０をカバープレート３０に組み付けることができる。   As described above, only when the end extension 213 having the longer axial length is inserted into the hole 351 on the side of the seat 352 where the notch is not formed, a dimensional difference of 1.5 mm is obtained. The subdoor 20 can be assembled to the cover plate 30 by bending the flat plate portion 31 so as to absorb.

他の場合は、３ｍｍ以上の寸法差を吸収する必要があるため実質的に組み付けは不可能である。これにより、サブドア２０とカバープレート３０との誤組み付け（逆方向組み付け）を防止することができる。   In other cases, since it is necessary to absorb a dimensional difference of 3 mm or more, the assembly is substantially impossible. Thereby, the incorrect assembly | attachment (reverse direction assembly | attachment) with the subdoor 20 and the cover plate 30 can be prevented.

図５に示すように、サブドア２０をカバープレート３０に組み付けたら、次に、この組み付け状態のまま、図２に示すケーシング１１の組付口１１１から、ケーシング１１内にサブドア２０を挿入した後、カバープレート３０をケーシング１１に装着する。カバープレート３０の係止部３３の爪係止穴３３ａをケーシング１１の図示しない爪部に係止し、螺着部３２とケーシング１１とをねじ穴３２ａを通してねじ締めし、カバープレート３０をケーシング１１に装着する。   As shown in FIG. 5, after the sub door 20 is assembled to the cover plate 30, the sub door 20 is inserted into the casing 11 from the assembling port 111 of the casing 11 shown in FIG. The cover plate 30 is attached to the casing 11. The claw locking hole 33a of the locking portion 33 of the cover plate 30 is locked to a claw portion (not shown) of the casing 11, the screwed portion 32 and the casing 11 are screwed through the screw hole 32a, and the cover plate 30 is fixed to the casing 11 Attach to.

これに伴ない、カバープレート３０の支持突起３４、３５（３５は図示省略）は組付口１１１からケーシング１１内に突出し、支持突起３４、３５から垂下したサブドア２０のドア板により補助内気導入口１９が閉塞される。ドア板２２の補助内気導入口１９側面には、パッキン２３が貼着されており、補助内気導入口１９の外周縁を確実にシールすることができる。   Accordingly, support protrusions 34 and 35 (35 are not shown) of the cover plate 30 protrude into the casing 11 from the assembly port 111, and the auxiliary indoor air introduction port is formed by the door plate of the sub door 20 suspended from the support protrusions 34 and 35. 19 is closed. A packing 23 is attached to the side surface of the auxiliary inside air introduction port 19 of the door plate 22 so that the outer peripheral edge of the auxiliary inside air introduction port 19 can be reliably sealed.

このように、カバープレート３０を介してケーシング１１に組み付けられたサブドア２０は、図１に示す内外気切替ドア１４が内気導入口１２を閉塞し外気導入口１３を開放する外気導入モード時には、図示しない送風ファンの駆動に伴い、外気が外気導入口１３からケーシング１１内に取り入れられ、下流側に向かって流動する。   Thus, the sub door 20 assembled to the casing 11 via the cover plate 30 is illustrated in the outside air introduction mode in which the inside / outside air switching door 14 shown in FIG. 1 closes the inside air introduction port 12 and opens the outside air introduction port 13. With the driving of the blower fan that does not, outside air is taken into the casing 11 from the outside air inlet 13 and flows toward the downstream side.

このとき、ケーシング１１内を流れる外気により、ケーシング１１内に負圧が発生し、車室内との間に気圧差が生じる。このため、サブドア２０が図２に実線で示す閉鎖位置から二点鎖線で示すように上方に回動して補助内気導入口１９を開放する。これにより車室内の内気が、補助内気導入口１９を介してケーシング１１内に取り入れられる。   At this time, a negative pressure is generated in the casing 11 due to the outside air flowing in the casing 11, and a pressure difference is generated between the passenger compartment and the vehicle interior. For this reason, the sub door 20 rotates upward as shown by a two-dot chain line from the closed position shown by a solid line in FIG. As a result, the inside air in the vehicle compartment is taken into the casing 11 via the auxiliary inside air introduction port 19.

補助内気導入口１９を介して取り入れられた内気は、外気導入口１３から導入された外気に混入して下流側に送られる。これにより、車室内の冷暖房効果を落とさず、とりわけ冬季には車室内の窓ガラスの曇り止めを図っている。   The inside air taken in via the auxiliary inside air introduction port 19 is mixed with the outside air introduced from the outside air introduction port 13 and sent downstream. As a result, the air-conditioning effect in the passenger compartment is not reduced, and the window glass in the passenger compartment is prevented from being fogged particularly in winter.

また、車室内の空調状態などにより、図１に示す内外気切替ドア１４が内気導入口１２を開放し外気導入口１３を閉塞する内気導入モード時には、内気が内気導入口１２からケーシング１１内に取り入れられ、下流側に向かって流動する。   Further, in the inside air introduction mode in which the inside / outside air switching door 14 shown in FIG. 1 opens the inside air introduction port 12 and closes the outside air introduction port 13 depending on the air conditioning state in the passenger compartment, the inside air enters the casing 11 from the inside air introduction port 12. It is taken in and flows downstream.

この過程で、ケーシング１１内に負圧が発生し、車室内との間に気圧差が生じる。このため、外気導入モードの時と同様に、サブドア２０が図１に二点鎖線で示すように上方に回動して補助内気導入口１９を開放する。これにより車室内の内気が補助内気導入口１９を介してケーシング１１内に取り入れられる。   In this process, a negative pressure is generated in the casing 11, and an atmospheric pressure difference is generated between the casing 11 and the passenger compartment. Therefore, as in the outside air introduction mode, the sub door 20 rotates upward as shown by a two-dot chain line in FIG. 1 to open the auxiliary inside air introduction port 19. As a result, the inside air in the vehicle compartment is taken into the casing 11 via the auxiliary inside air introduction port 19.

補助内気導入口１９を介して取り入れられた内気は、内気導入口１２から導入された内気と合流して下流側に送られる。この内気導入モードでは、ともに車室内の内気が内気導入口１２および補助内気導入口１９からケーシング１１内に取り入れられて合流する。このため、同一の内気量を確保する場合、内気導入口１２の開口面積は、補助内気導入口１９の開口面積だけ小さくて済み、ケーシング１１の不用意な強度低下を防ぐことができる。   The inside air taken in via the auxiliary inside air introduction port 19 merges with the inside air introduced from the inside air introduction port 12 and is sent to the downstream side. In this inside air introduction mode, the inside air in the vehicle compartment is taken into the casing 11 from the inside air introduction port 12 and the auxiliary inside air introduction port 19 and merges. For this reason, when ensuring the same amount of inside air, the opening area of the inside air introduction port 12 can be reduced by the opening area of the auxiliary inside air introduction port 19, and an inadvertent reduction in the strength of the casing 11 can be prevented.

このように、空調運転時とりわけ外気導入モード時には、サブドア２０を開いて車室内の内気を補助内気導入口１９から二次的に取り入れ外気に混入させている。これにより、車室内の冷暖房効果を落とさず、冬季には車室内の窓ガラスの曇り止めが図られる。   In this way, during the air conditioning operation, particularly in the outside air introduction mode, the sub door 20 is opened, and the inside air in the passenger compartment is secondarily taken in from the auxiliary inside air introduction port 19 and mixed into the outside air. As a result, the air-conditioning effect in the passenger compartment is not reduced, and the window glass in the passenger compartment is prevented from fogging in winter.

上述の構成、組み付け方法、および作動によれば、サブドア２０は、ケーシング１１に対しカバープレート３０を介して組み付けられ、サブドア２０の回転軸２１はカバープレート３０の孔部３４１、３５１により回動自在に支持されている。したがって、カバープレート３０のケーシング１１への組付け状態がばらついたとしても、サブドア２０の回転軸２１の支持状態は変化しない。このようにして、サブドア２０の回動不良やがたつき音発生を防止することができる。   According to the above-described configuration, assembly method, and operation, the sub door 20 is assembled to the casing 11 via the cover plate 30, and the rotary shaft 21 of the sub door 20 is freely rotatable by the holes 341 and 351 of the cover plate 30. It is supported by. Therefore, even if the assembly state of the cover plate 30 to the casing 11 varies, the support state of the rotary shaft 21 of the sub door 20 does not change. In this way, it is possible to prevent the sub door 20 from rotating poorly and rattling.

図７は、本発明者らが行なった本実施形態の内外気切替装置のサブドア２０の開度特性および従来の（図８に示す）内外気切替装置のサブドア５２０の開度特性の評価結果を示すグラフである。グラフの開度特性は送風ファンの送風量にほぼ比例するブロワ印加電圧に対する特性である。   FIG. 7 shows the evaluation results of the opening characteristics of the subdoor 20 of the inside / outside air switching device of the present embodiment and the opening characteristics of the subdoor 520 of the conventional inside / outside air switching device (shown in FIG. 8) performed by the present inventors. It is a graph to show. The opening degree characteristic of the graph is a characteristic with respect to the blower applied voltage that is substantially proportional to the air flow rate of the blower fan.

図７に示すように、従来の内外気切替装置では、サブドア５２０の開度特性が送風量に対しリニアな特性となり難い。これに対し、本実施形態の内外気切替装置によれば、サブドア２０の開度特性は、送風量に対しほぼリニアな特性となることを確認している。   As shown in FIG. 7, in the conventional inside / outside air switching device, the opening characteristic of the sub door 520 is unlikely to be a linear characteristic with respect to the air flow rate. On the other hand, according to the inside / outside air switching device of the present embodiment, it has been confirmed that the opening characteristic of the sub door 20 is substantially linear with respect to the air flow rate.

なお、図８に示した従来の内外気切替装置では、サブドア５２０回転軸５２１と、ケーシング５１１支持部５１１ａおよびカバープレート５３０支持突起５３４との摺接箇所にグリースを塗布している。本実施形態によれば、グリース塗布を廃止しても良好な開度特性を得ている。   In the conventional inside / outside air switching device shown in FIG. 8, grease is applied to a sliding contact portion between the sub door 520 rotating shaft 521, the casing 511 support portion 511 a and the cover plate 530 support protrusion 534. According to this embodiment, good opening characteristics are obtained even if grease application is eliminated.

また、従来のサブドア５２０の金属製の回転軸５２１の径がφ５ｍｍであったのに対し、本実施形態のサブドア２０の回転軸２１は、カバープレート３０と摺接する端延部２１２、２１３をφ３ｍｍと小径にしている。したがって、摺接面積を低減し回動抵抗を抑制して、良好な開度特性をより確実なものとしている。   Further, the diameter of the metal rotary shaft 521 of the conventional sub door 520 is φ5 mm, whereas the rotary shaft 21 of the sub door 20 of the present embodiment has the extended portions 212 and 213 slidably contacting the cover plate 30 with φ3 mm. It has a small diameter. Therefore, the sliding contact area is reduced and the rotation resistance is suppressed, and the favorable opening degree characteristic is further ensured.

また、サブドア２０をケーシング１１へ組み付けるときには、サブドア２０とカバープレート３０とを組み付けた後、この組立体をケーシング１１に組み付けている。したがって、ケーシング１１に対する組み付け時間を短縮することができる。   Further, when the sub door 20 is assembled to the casing 11, the assembly is assembled to the casing 11 after the sub door 20 and the cover plate 30 are assembled. Therefore, the assembly time with respect to the casing 11 can be shortened.

また、サブドア２０は、端延部２１２、２１３を孔部３４１、３５１内に挿設してカバープレート３０に組み付けられている。したがって、従来のようにカバープレートとケーシングとの間に挟持されて支持されている場合より、サブドア２０が脱落し難い構造となっている。   Further, the sub door 20 is assembled to the cover plate 30 by inserting the extended end portions 212 and 213 into the hole portions 341 and 351. Therefore, the sub door 20 has a structure that is less likely to drop off than in the case where the cover plate and the casing are sandwiched and supported as in the prior art.

さらに、サブドア２０は、回転軸２１とドア板２２とが一体成形されており、サブドア２０製造時に、回転軸２１とドア板２２とを接合する必要がない。   Further, in the sub door 20, the rotating shaft 21 and the door plate 22 are integrally formed, and it is not necessary to join the rotating shaft 21 and the door plate 22 when the sub door 20 is manufactured.

（他の実施形態）
上記一実施形態では、補助内気導入口１９は矩形状に形成されていたが、これに限定されるものではない。例えば、台形状、楕円形状等であってもよい。ケーシング１１の壁面の形状に応じて形成し、ケーシング１１の体格を比較的小型化できる形状がより好ましい。また、サブドア２０のドア板２２の形状も矩形状に限定されず、補助内気導入口の形状に応じて設定すればよい。 (Other embodiments)
In the embodiment described above, the auxiliary inside air introduction port 19 is formed in a rectangular shape, but is not limited thereto. For example, it may be trapezoidal or elliptical. A shape that can be formed in accordance with the shape of the wall surface of the casing 11 and that can relatively reduce the size of the casing 11 is more preferable. Further, the shape of the door plate 22 of the sub door 20 is not limited to a rectangular shape, and may be set according to the shape of the auxiliary inside air introduction port.

また、上記一実施形態では、補助内気導入口１９はケーシング１１に設けていたが、本発明で言うところの補助内気導入口を設けるケーシングは、外気導入モード時において内部に外気が流通し実質的にケーシングとして機能する部材であればよい。例えば、ケーシング１１の外気導入口１３の上流側に接続される外気導入ダクトを、本発明で言うところのケーシングとすることができる。また、内気導入口１２を閉塞した内外気切替ドア１４の内気導入口１２領域部分を本発明で言うところのケーシングとしてもかまわない。   In the above embodiment, the auxiliary internal air introduction port 19 is provided in the casing 11. However, the casing provided with the auxiliary internal air introduction port referred to in the present invention is substantially free from outside air flowing in the outside air introduction mode. Any member that functions as a casing may be used. For example, an outside air introduction duct connected to the upstream side of the outside air inlet 13 of the casing 11 can be used as a casing in the present invention. Moreover, the inside air introduction port 12 area | region part of the inside / outside air switching door 14 which obstruct | occluded the inside air introduction port 12 may be used as a casing in the present invention.

本発明を適用した一実施形態における内外気切替装置を備える送風ユニット部１を示す概略斜視図である。It is a schematic perspective view which shows the ventilation unit part 1 provided with the inside / outside air switching apparatus in one Embodiment to which this invention is applied. 一実施形態における内外気切替装置の補助内気導入口１９形成部位の縦断面図である。It is a longitudinal cross-sectional view of the auxiliary | assistant inside air introduction port 19 formation site | part of the inside / outside air switching apparatus in one Embodiment. （ａ）は、サブドア２０の平面図、（ｂ）は、サブドア２０を支持するカバープレート３０の平面図である。(A) is a top view of the subdoor 20, (b) is a top view of the cover plate 30 which supports the subdoor 20. FIG. カバープレート３０の支持突起３４先端部の拡大斜視図である。FIG. 4 is an enlarged perspective view of a tip end portion of a support protrusion 34 of a cover plate 30. サブドア２０とカバープレート３０との組み付け状態を示す図である。It is a figure which shows the assembly | attachment state of the subdoor 20 and the cover plate 30. FIG. サブドア２０とカバープレート３０との誤組み付け防止状態を示す図である。It is a figure which shows the incorrect assembly | attachment prevention state of the subdoor 20 and the cover plate 30. FIG. 本実施形態の内外気切替装置のサブドア２０の開度特性を示すグラフである。It is a graph which shows the opening degree characteristic of the subdoor 20 of the inside / outside air switching device of this embodiment. 従来の内外気切替装置の補助内気導入口形成部位の縦断面図である。It is a longitudinal cross-sectional view of the auxiliary | assistant inside air introduction port formation site | part of the conventional inside / outside air switching apparatus.

符号の説明Explanation of symbols

１１ ケーシング
１２ 内気導入口
１３ 外気導入口
１４ 内外気切替ドア（内外気切替手段）
１９ 補助内気導入口
２０ サブドア（補助内気導入ドア）
２１ 回転軸
２２ ドア板（ドア部）
３０ カバープレート（支持部材）
３３、３４ 支持突起
２１１ 中央部
２１１ａ、２１１ｂ 端面
２１２、２１３ 端延部
３４１、３５１ 孔部
３４２、３５２ 座部
３４３ 切欠部 DESCRIPTION OF SYMBOLS 11 Casing 12 Inside air introduction port 13 Outside air introduction port 14 Inside / outside air switching door (inside / outside air switching means)
19 Auxiliary air introduction port 20 Sub door (auxiliary air introduction door)
21 Rotating shaft 22 Door plate (door part)
30 Cover plate (supporting member)
33, 34 Support protrusion 211 Central part 211a, 211b End face 212, 213 End extension part 341, 351 Hole part 342, 352 Seat part 343 Notch part

Claims (2)

車室内気を導入するための内気導入口（１２）および車室外気を導入するための外気導入口（１３）を有するケーシング（１１）と、
前記内気導入口（１２）および前記外気導入口（１３）を切替開閉する内外気切替手段（１４）と、
前記ケーシング（１１）に設けられ、前記内外気切替手段（１４）が前記外気導入口（１３）を開く外気導入モード時に、前記内気を導入するための補助内気導入口（１９）と、
回転軸（２１）を中心に回動し、前記補助内気導入口（１９）を開閉する補助内気導入ドア（２０）と、
前記ケーシング（１１）に対し別部材として設けられ、前記補助内気導入ドア（２０）を支持するための支持部材（３０）とを備える内外気切替装置であって、
前記回転軸（２１）は、軸方向における中央部（２１１）に対し両側の端延部（２１２、２１３）が小径に形成されており、一方の前記端延部（２１２）に対し他方の前記端延部（２１３）が、軸方向長さが長く形成されており、
前記支持部材（３０）は、前記回転軸（２１）の前記端延部（２１２、２１３）をそれぞれ回動可能に挿設する孔部（３４１、３５１）を一対有し、前記一対の孔部（３４１、３５１）の周囲には、それぞれ前記中央部（２１１）の端面（２１１ａ、２１１ｂ）を受ける座部（３４２、３５２）が形成され、前記一対の座部（３４２、３５２）のうち、前記一方の端延部（２１２）に対応する側の前記座部（３４２）にのみ、前記一方の端延部（２１２）を前記孔部（３４１）に軸直交方向から受け入れるための切欠部（３４３）を形成し、
前記補助内気導入ドア（２０）は、前記回転軸（２１）を前記孔部（３４１、３５１）に挿設した状態で、前記支持部材（３０）を介して前記ケーシング（１１）に組み付けられていることを特徴とする内外気切替装置。 A casing (11) having an inside air introduction port (12) for introducing vehicle interior air and an outside air introduction port (13) for introducing vehicle compartment outside air;
Inside / outside air switching means (14) for switching between opening and closing the inside air introduction port (12) and the outside air introduction port (13);
An auxiliary inside air introduction port (19) for introducing the inside air in an outside air introduction mode provided in the casing (11) and in which the inside / outside air switching means (14) opens the outside air introduction port (13);
An auxiliary internal air introduction door (20) that rotates about the rotation shaft (21) and opens and closes the auxiliary internal air introduction port (19);
An inside / outside air switching device provided as a separate member with respect to the casing (11) and provided with a support member (30) for supporting the auxiliary inside air introduction door (20),
The rotary shaft (21) has end portions (212, 213) on both sides of the central portion (211) in the axial direction having a small diameter, and the other end portion (212) has the other end. The end extension (213) is formed with a long axial length,
Said support member (30), said rotary shaft (21) said end distal portion (212, 213) to pivotally each have a pair of holes for inserted (341, 351) of said pair of holes (341, 351) are formed with seats (342, 352) for receiving the end surfaces (211a, 211b) of the central part (211), and of the pair of seats (342, 352), A notch for receiving the one end extension (212) in the hole (341) from the direction perpendicular to the axis only in the seat (342) on the side corresponding to the one end extension (212). 343),
The auxiliary inside air introduction door (20) is assembled to the casing (11) via the support member (30) in a state where the rotation shaft (21) is inserted into the hole (341, 351). An inside / outside air switching device. 前記補助内気導入ドア（２０）は、前記補助内気導入口（１９）を閉塞するためのドア部（２２）を有し、
前記回転軸（２１）と前記ドア部（２２）とは、一体成形されていることを特徴とする請求項１に記載の内外気切替装置。 The auxiliary inside air introduction door (20) has a door portion (22) for closing the auxiliary inside air introduction port (19),
The inside / outside air switching device according to claim 1, wherein the rotating shaft (21) and the door portion (22) are integrally formed .
JP2003374688A 2003-11-04 2003-11-04 Inside / outside air switching device Expired - Fee Related JP4305134B2 (en)

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US5382192A (en) * 1993-07-02 1995-01-17 Classic Modular Systems, Inc. Damper control apparatus
US5533929A (en) * 1993-12-29 1996-07-09 Attridge, Jr.; Russell G. Remotely trippable and resettable damper
JP3266152B2 (en) * 1999-03-31 2002-03-18 株式会社デンソー Link lever device and vehicle air conditioner using the same
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